- a person who spoils the joy or pleasure of others; spoilsport.
Origin of kill-joy
First recorded in 1770–80
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for killjoy
Not to be a killjoy fact-checker, but this does seem like an important detail to get right.Jesus Christ, Baby Daddy?
November 12, 2014
Some of you do not like to be reminded of it, and think it a killjoy.Expositions of Holy Scripture
Allan, I don't want to be a killjoy, but you asked for my advice.The Black Fawn
James Arthur Kjelgaard
I did not wish to be a killjoy and a marplot, or I would have forbidden Fred to touch a foot-ball after he entered college.The Opinions of a Philosopher
I dont want to be shown up as a fraid cat and a killjoy, cried Jessie.The Campfire Girls on Station Island
However, I did my utmost to bear a cheerful and contented mien, for killjoy is but a poor friend.The Admirable Lady Biddy Fane
- a person who spoils other people's pleasure
Word Origin and History for killjoy
Online Etymology Dictionary, © 2010 Douglas Harper